1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>write_zsreg</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Z8530 Programming Guide"><link rel="up" href="intfunctions.html" title="Chapter&#160;10.&#160;Internal Functions"><link rel="prev" href="API-read-zsdata.html" title="read_zsdata"><link rel="next" href="API-write-zsctrl.html" title="write_zsctrl"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">write_zsreg</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-read-zsdata.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;10.&#160;Internal Functions</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-write-zsctrl.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-write-zsreg"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>write_zsreg &#8212; 
2     Write to a Z8530 channel register
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">write_zsreg </b>(</code></td><td>struct z8530_channel * <var class="pdparam">c</var>, </td></tr><tr><td>&#160;</td><td>u8 <var class="pdparam">reg</var>, </td></tr><tr><td>&#160;</td><td>u8 <var class="pdparam">val</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1119409108"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>c</code></em></span></dt><dd><p>
4     The Z8530 channel
5    </p></dd><dt><span class="term"><em class="parameter"><code>reg</code></em></span></dt><dd><p>
6     Register number
7    </p></dd><dt><span class="term"><em class="parameter"><code>val</code></em></span></dt><dd><p>
8     Value to write
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1119412540"></a><h2>Description</h2><p>
10   Write a value to an indexed register. The caller must hold the lock
11   to honour the irritating delay rules. We know about register 0
12   being fast to access.
13   </p><p>
14
15   Assumes c-&gt;lock is held.
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